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Question
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
Solution
(a) The oxide E2O is basic in nature because it turns red litmus paper blue.
(b) The element E is a metal because metal oxides are basic in nature.
(c) Sodium (Na) is an element like E. It forms the oxide Na2O on reacting with oxygen, which turns red litmus paper blue.
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